Preheat oven to 350°F. Spray the pan with a vegetable spray. (Use regular pie pan or a tart pan with a removable bottom.)

Sift together flour, salt and confectioners sugar into a small bowl. Blend in the ground walnuts and then beat in the cooled melted margarine/butter and vanilla extract until all combines and forms a thick dough.

Press the dough into the tart/pie pan with your fingers until it is evenly distributed on the bottom and sides of pan.

Place the pan in preheated oven and bake for 15-20 minutes or until lightly browned.

Remove from oven, place on a wire rack to cool. Fill with a filling of your choice.